Big docs refactor! Motivation is to make it easier for people to find resources they are looking for. To accomplish this, there are now three main sections: - Getting Started: steps for getting started, walking through most core functionality - Modules: these are different modules of functionality that langchain provides. Each part here has a "getting started", "how to", "key concepts" and "reference" section (except in a few select cases where it didnt easily fit). - Use Cases: this is to separate use cases (like summarization, question answering, evaluation, etc) from the modules, and provide a different entry point to the code base. There is also a full reference section, as well as extra resources (glossary, gallery, etc) Co-authored-by: Shreya Rajpal <ShreyaR@users.noreply.github.com>
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Agents
Agents use an LLM to determine which actions to take and in what order. An action can either be using a tool and observing its output, or returning to the user. For a list of easily loadable tools, see here. Here are the agents available in LangChain.
For a tutorial on how to load agents, see here.
zero-shot-react-description
This agent uses the ReAct framework to determine which tool to use based solely on the tool's description. Any number of tools can be provided. This agent requires that a description is provided for each tool.
react-docstore
This agent uses the ReAct framework to interact with a docstore. Two tools must
be provided: a Search
tool and a Lookup
tool (they must be named exactly as so).
The Search
tool should search for a document, while the Lookup
tool should lookup
a term in the most recently found document.
This agent is equivalent to the
original ReAct paper, specifically the Wikipedia example.
self-ask-with-search
This agent utilizes a single tool that should be named Intermediate Answer
.
This tool should be able to lookup factual answers to questions. This agent
is equivalent to the original self ask with search paper,
where a Google search API was provided as the tool.